/*
 * Copyright 2012 Mirella Esther da Silva
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.mirella.parser.kml;

import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;

import android.util.Log;

import com.mirella.alerts.Alert;
import com.mirella.parser.Parser;

/**
 * KML files parser guided by @class KMLAlertHandler. Implements @interface Parser.
 */
public class KMLParser implements Parser{

	@Override
	public List<Alert> parse(InputStream input) {
		try
		{           
			SAXParserFactory spf = SAXParserFactory.newInstance(); 
			SAXParser sp = spf.newSAXParser(); 

			XMLReader xr = sp.getXMLReader();

			KMLAlertHandler kmlAlertHandler = new KMLAlertHandler(); 
			xr.setContentHandler(kmlAlertHandler); 
			xr.parse(new InputSource(input));

			return kmlAlertHandler.getAlerts(); 

		} catch (Exception e) {
			Log.e("KMLParser", "error with kml xml", e); 
		}   
		return new ArrayList<Alert>();
	}

}
